/Engine/Source/Runtime/Core/Public/Containers/UnrealString.h
Removes the text from the start of the string if it exists.
true if the prefix was removed, otherwise false.
template<typename TCharRangeType, std::enable_if_t< [TIsCharRangeNotCArrayNotFString](API\Runtime\Core\Templates\TAnd)< TCharRangeType >::Value > *> bool RemoveFromStart ( TCharRangeType && InPrefix, [ESearchCase::Type](API\Runtime\Core\Misc\ESearchCase__Type) SearchCase )